Used SOCOM Daniel Defense MK18 Pistol 5.56 NATO AR-15 AR15 10.3"

DD-MK18 M4 Pistol 556 AR-15 AR15 Surefire DDM4

Daniel Defense MK18 Pistol 5.56mm NATO Black in Good Condition Thumbnail
Sold On:February 1st at 10:00 PM
How Buying WorksEnding February 1st at 10:00 PM

Key Features

  • Item Type: AR Pistols
  • Action: AR-15 Direct Impingement
  • Manufacturer: Daniel Defense
  • Capacity: 30 1
  • Model: MK18
  • Barrel Length: 10.3"
  • Caliber: 5.56mm NATO
  • Finish: Black
  • Overall Condition: Good

Product Description

    Daniel Defense MK18 DDM4 Pistol 5.56 NATO, 10.3 inch, RIS II Quad Rail, Geissele SSA Combat Flat Trigger, SureFire Warcomp

    This Daniel Defense MK18 DDM4 Pistol stands out with a factory-marked MK18 upper, a 10.3 inch cold hammer forged, chrome-lined barrel, and the proven MK18 RIS II quad rail. It is upgraded with a SureFire Warcomp muzzle device and a Geissele SSA Combat flat-face trigger, delivering premium components where they matter. The setup includes an ambidextrous charging handle with extended latches and an SB Tactical pistol stabilizing brace.

    Condition

    Overall Condition: Good condition, showing some signs of prior use and handling.

    Bore Condition: Good - Clean, well-maintained, minor wear marks.

    Bore Rifling: Good Rifling - Intact, well-defined lands and grooves.

    Specific Condition Notes: This firearm shows signs of wear and handling, with visible scratches and blemishes.

    What’s Included

    • Hard case
    • Daniel Defense DDM4/DD5 Firearms manual
    • 1x 30-round Mission First Tactical (MFT) polymer STANAG-pattern magazine
    • Ladder-style Picatinny rail covers (installed)
    • Ambidextrous charging handle (installed)
    • Pronged muzzle device (installed)

    Built on the AR-15 platform and made in the USA, this MK18 pistol pairs 7075-T6 aluminum receivers with a Type III hardcoat anodized black finish. The upper is marked "MK18" and the caliber is marked "5.56." It includes a forward assist, dust cover, and brass deflector, along with a full-length Picatinny top rail featuring T-markings and side L-markings.

    The 10.3 inch barrel is chrome-moly-vanadium steel, cold hammer forged, chrome-lined, and government profile. It uses a carbine-length gas system and is threaded 1/2x28 TPI with a 1:7 twist. A SureFire Warcomp muzzle device is installed.

    The Daniel Defense MK18 RIS II quad rail is 6061-T6 aluminum and measures 9.55 inches. The rail is engraved with U.S. PAT. NO. 7,716,865, CAGE Code 3E3E2, and P/N DD-8020-BK.

    Ladder-style Picatinny rail covers are installed for additional grip and protection.

    Upgrades include a Geissele SSA Combat flat-face trigger and an ambidextrous charging handle with enlarged latches. The pistol is equipped with an SB Tactical pistol stabilizing brace and a textured polymer pistol grip. Capacity is 30+1, and one MFT polymer STANAG-pattern magazine is included.

Specifications

Item TypeAR Pistols
ManufacturerDaniel Defense
ModelMK18
SubmodelPistol
Caliber5.56mm NATO
Overall ConditionGood
Bore ConditionGood
ActionAR-15 Direct Impingement
Capacity30 1
Barrel Length10.3"
FinishBlack
Stock/Gripstextured polymer pistol grip
Country of OriginUnited States

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